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Question

To separate ammonium chloride from common salt, we use:


A
filtration
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B
sedimentation
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C
sieving
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D
sublimation
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Solution

The correct option is D sublimation
The mixture of ammonium chloride and common salt can be separated by sublimation method.
Ammonium chloride is sublimes. So on heating, ammonium chloride changes into vapours leaving common salt behind.
Sublimation is the process in which a solid substance is directly converted into a gaseous state without first converting into the liquid state.

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